How do you replace water pump Mazda 323 1985?

To replace the water pump on a 1985 Mazda 323, first, disconnect the negative battery terminal and drain the coolant. Remove the serpentine belt, then take off the timing belt cover to access the water pump. Unbolt the old water pump, clean the mounting surface, and install the new pump with a new gasket, ensuring proper alignment. Finally, reassemble all components, refill the coolant, and check for leaks.